Q. Who Invented Elevator Safety Brake ?
A) Elisha Graves Otis
B) Alfred Bernhard Nobel
C) Garrett Augustus Morgan
D) Percy LeBaron Spencer
✔ Correct Answer: Elisha Graves Otis
Exam Insight
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A) Elisha Graves Otis
B) Alfred Bernhard Nobel
C) Garrett Augustus Morgan
D) Percy LeBaron Spencer
✔ Correct Answer: Elisha Graves Otis
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